The Testo 552 is a high-precision digital vacuum gauge that has all the measuring function you need for evacuating refrigerant systems and heat pumps.

The rugged meter is built to last and tough enough to take the odd knock.

The Testo 552 is also the only vacuum gauge on the market with an absolute pressure sensor which is maintenance-free yet still able to provide you with 100% reliable readings.

The Testo 552 vacuum gauge – areas of application

Evacuating is one of the most important steps when installing or restarting refrigerant or a/c systems: foreign gases, moisture and oils have to be removed properly.

That’s when the absolute pressure of a system needs to be measured. And that’s exactly what the Testo 552 digital vacuum gauge does: the meter provides you with highly accurate information on the dehumidification status of the system and measures even the smallest of absolute pressures
reliably.

This means that you are always able to observe manufacturer specifications.

A visual alarm warns immediately when a threshold has been exceeded.

The IP42-rated Testo 552 has 2400hours’ worth of battery power for 100 days of continuous operation and is both water resistant and resistant to dirt.